Cited by 152Sleep and Wakefulness ResearchMemory and Neural MechanismsMemory Processes and Influences

The role of sleep spindles and slow-wave activity in integrating new information in semantic memory

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Tamminen, Jakke, Lambon Ralph, Matthew A., Lewis, Penelope A.·2013·The Journal of Neuroscience

Abstract

Assimilating new information into existing knowledge is a fundamental part of consolidating new memories and allowing them to guide behavior optimally and is vital for conceptual knowledge (semantic memory), which is accrued over many years. Sleep is important for memory consolidation, but its impact upon assimilation of new information into existing semantic knowledge has received minimal examination. Here, we examined the integration process by training human participants on novel words with meanings that fell into densely or sparsely populated areas of semantic memory in two separate sessions. Overnight sleep was polysomnographically monitored after each training session and recall was tested immediately after training, after a night of sleep, and 1 week later. Results showed that participants learned equal numbers of both word types, thus equating amount and difficulty of learning across the conditions. Measures of word recognition speed showed a disadvantage for novel words in dense semantic neighborhoods, presumably due to interference from many semantically related concepts, suggesting that the novel words had been successfully integrated into semantic memory. Most critically, semantic neighborhood density influenced sleep architecture, with participants exhibiting more sleep spindles and slow-wave activity after learning the sparse compared with the dense neighborhood words. These findings provide the first evidence that spindles and slow-wave activity mediate integration of new information into existing semantic networks.

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Crossref · 10.1523/jneurosci.5093-12.2013

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Authors
Tamminen, J., Lambon Ralph, M. A., & Lewis, P. A.
Affiliations
  • Royal Holloway University of London (GB)
  • University of Manchester (GB)
Venue
The Journal of Neuroscience
Published
2013-09-25
Volume
33
Issue
39
Pages
15376-15381
ISSN
  • 0270-6474 (ISSN-L)
  • 1529-2401
OpenAlex
W2058819676
Cited by
152
References
31
Citations by year
2026: 3 · 2025: 9 · 2024: 17 · 2023: 4 · 2022: 12 · 2021: 13 · 2020: 10 · 2019: 8 · 2018: 15 · 2017: 21 · 2016: 11 · 2015: 15 · 2014: 14
FWCI
7.18
Type
journal article
Language
en
Open access
Locations
  • Journal of Neuroscience (publishedVersion, cc-by-nc-sa)
  • Europe PMC (PubMed Central) (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Research Explorer (The University of Manchester) (publishedVersion, other-oa)
  • ORCA Online Research @Cardiff (Cardiff University) (submittedVersion)
Funders
  • Directorate for Biological Sciences
  • Biotechnology and Biological Sciences Research Council (BB/F003048/1)
  • Economic and Social Research Council (ES/H030107/1, RES-062-23-, ES/H011730/1, 062-23-2268, PTA-026-27-2540, RES-062-23-2268)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory and Neural Mechanisms
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Memory Processes and Influences
Keywords
sleep spindles, slow-wave activity, semantic memory, memory consolidation, novel word learning, sleep architecture, semantic interference, word recognition speed, polysomnography
MeSH terms
Adult, Female, Humans, Learning, Male, Mental Recall, Semantics, Sleep Stages, Brain Waves

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